It is well-constructed. My only criticism is that the overhangs on the cover should be longer by about two inches. A longer length would probably deter foreign insects from trying to get into the hive.
Beautiful and the bees love it!
The telescoping top/lid fits great n appears great quality ! It's in active use right now .. Just pulled it n inner lid (your product too) to add syrup late yesterday afternoon. My complete 10 frame deep setup my bees are loving ! Gerald